Adobe AEM - 资源拒绝每个IP访问

i'm working with Adobe AEM 6 SP2 and i need to filter the access to some resources like /etc/importers/bulkeditor.html. I need allow to users into the VPN but i need deny to the rest of the users (internet access). I thought to use a http filter but it does not seem very efficient. Also i researched about the rules of the dispatcher but can not find how to do it.i'm working with Adobe AEM 6 SP2 and i need to